Smart activity coaching. An enhanced Heart Rate app. Your favorite playlists right on your wrist. A built-in altimeter. And a more powerful processor that lets Siri speak to you. Introducing Apple Watch Series 3. Now you can be more active, motivated, and connected than ever. GPS and a barometric altimeter track how far and high you go New dual-core processor for faster app performance Ultimate sports watch and intelligent activity tracker Swimproof so you’re always ready for the pool or ocean Aluminum case watchOS 4 is even more intuitive and intelligent What's Included Apple Watch Series 3 Sport Band 1m Magnetic Charging Cable 5W USB Power Adapter 38mm: Band fits 130–200mm wrists Apple Watch Series 3 (GPS) requires an iPhone 5s or later with iOS 11 or later Battery life: up to 18 hrs. Wireless: Bluetooth 4.2, Wi-Fi For information about the modified return policy, please click here Model no. MQKW2LL/A Disclaimers Compared with the previous generation ISO standard 22810:2010. Appropriate for shallow-water activities like swimming. Submersion below shallow depth and high-velocity water activities not recommended. Size: One Size. Color: Pink.